He may have explored strange new worlds, but when it came to throwing punches and chops at his alien enemies, Mr. Shatner left a lot to be desired. Perhaps muscles are out of style in the future. —XFINITY Entertainment Staff

(Photo: AP)

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He wasn't the first NBA star to make an unsuccessful jump to Hollywood, and he won't be the last. From his wardobe to his awful performance, everything Rodman contributed to this film was wrong.—XFINITY Entertainment Staff

(Photo: Columbia)

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"Prince" may be the best video game movie ever made, but Gyllenhaal (Bubble Boy!) just isn't believable as an epic hero. Bad extensions and muscles does not an action hero make. —XFINITY Entertainment Staff

(Photo: Walt Disney)

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Casting the skinny kid from "That '70s Show" as one of Spider-man's most formidable foes was a huge mistake. Seeing Topher hiss his lines through sharp teeth and computer-generated alien skin was enough to take even the most dedicated fanboy out of the moment. —XFINITY Entertainment Staff

(Photo: Columbia Pictures)

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We went to this film specifically to see little Dakota Fanning wield weaponry. Unfortunately, she was more of a whiny tween than an action hero. To her credit, she does pull off the vampire role in "Twilight" quite convincingly. —XFINITY Entertainment Staff

(Photo: Summit Entertainment)

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There is no doubt that ScarJo is pleasing to the eye, but she's not the kind of actress you could imagine doing her own stunts. Thankfully, her action prowess improved by the time "The Avengers" rolled around. —XFINITY Entertainment Staff

(Photo: Marvel)

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He may have been "Stone Cold" in the WWE, but he was stone cold boring as an action star. Just about anyone can put on a mean face, but it takes more than that to sell a movie. —XFINITY Entertainment Staff

(Photo: Lionsgate)

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An epic failure in casting. Berry was a hard sell as Storm in the "X-Men" series, but even more unbelievable as the sultry Catwoman. Sure, the writing and directing didn't help, but this was still one de-clawed kitty. —XFINITY Entertainment Staff

(Photo: Warner Bros)

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Cher from "Clueless" playing a superhero? As if! Silverstone's flat performance as a caped crusader was bad enough, but when paired with Clooney's sickenly coy portrayal of Bruce Wayne, it proved enough to kill the franchise. —XFINITY Entertainment Staff

(Photo: Warner Bros)

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Compared to co-star Will Smith, this funnyman looked like Steven Q. Urkel. From "Bad Boys" to "Blue Streak" to "National Security," Lawrence just has missed the mark when trying to play the macho man. —XFINITY Entertainment Staff

(Photo: Columbia Pictures)

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Affleck has pulled off action-related roles in the past ("Armageddon"), but something about his clean-cut looks and general lack of grit was entirely inappropriate for the Devil of Hell's Kitchen. —XFINITY Entertainment Staff

(Photo: 20th Century Fox)

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For as charismatic as he was in the wrestling ring, Hogan apparently left his personality in the locker room when he jumped to the big screen. From "Suburban Commando" to "Mr. Nanny," the Hulkster was wise to keep his day job. —XFINITY Entertainment Staff

(Photo: New Line)

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For the most part, Chris Klein's career has been a one-note tune of reserved nice guys and forgettable best friends. And that's what he's good at. Unfortunately, you don't see many shy, reserved action heroes.—XFINITY Entertainment Staff

(Photo: 20th Century Fox)

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The casting of an MMA fighter in the role that made Mr. T famous upset many fans of the popular '80s show. And once you hear any of Jackson's lamely delivered catchphrases ("I'm-a kill you, fool!"), you'll understand why. —XFINITY Entertainment Staff

(Photo: 20th Century Fox)

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As we established with Martin Lawrence, comedians just don't transfer well to action films. Rob Schneider's 1993 role as a surfing, fighting, fortune-telling ninja was just as ridiculous as it sounds. What if ... we still loved this movie? We kinda do. Shhh. Don't tell. —XFINITY Entertainment Staff

(Photo by Evan Agostini/Getty Images)

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The bigger they are, the harder the stink. Who would have thought that the biggest man in basketball would have been the biggest dud in cinema? Apparently, everyone but the producers of "Steel." Even action heroes need some acting abilities. —XFINITY Entertainment Staff

(Photo: Warner Bros)

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Have mercy! Yes, Uncle Jesse once played a tough-as-nails motorcycle gang leader tasked with leading a government-created biker unit into a European castle to rescue a nuclear scientist and his daughter. Cut. It. Out! —XFINITY Entertainment Staff

(Photo: ABC)

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Motorcycle-based films must be a magnet for bad casting. The proof continues with '90s rapper Vanilla Ice as a motorcycle-riding rapper (duh!) in this loose remake of "Rebel Without A Cause." —XFINITY Entertainment Staff

(Photo: Universal)

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Why is Jay Leno the worst action star ever? He's proven that he deserves the title on two different occasions.

First, the comedian and talk show host starred as a cop opposite Mr. Miyagi in the all-too-racially-insensitive 1989 buddy film "Collision Course."

Then, in 1998, Leno teamed up with professional wrestler Diamond Dallas Page for the main event of a World Championship Wrestling pay-per-view event called "Road Wild." At the time, the show was the least-bought wrestling pay-per-view of all time.—XFINITY Entertainment Staff

(Photo: HBO)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.